Hangs on ipv6 in CentOS7, how to fix?

You have a server with CentOS (esxi, the virtual reality), on the main interface eno16777984 looking outside is configured with 2 IP, one for ipv4 second ipv6. The problem is that ipv6 regularly fall off, after the restart of the network rises, working longer days and again Uchida "in a dream". IPv4 on this interface works perfectly, without a single break :)

cat /etc/sysconfig/network
# Created by anaconda
NETWORKING_IPV6=yes
NETWORKING=yes


cat /etc/sysconfig/network-scripts/ifcfg-eno16777984 
TYPE="Ethernet"
BOOTPROTO="dhcp"
DEFROUTE="yes"
PEERDNS="yes"
PEERROUTES="yes"
IPV4_FAILURE_FATAL="no"
IPV6INIT="yes"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_PEERDNS="yes"
IPV6_PEERROUTES="yes"
IPV6_FAILURE_FATAL="no"
NAME="eno16777984"
UUID="9d2ac7bd-c1d8-492f-a1c8-c3b3d591b679"
DEVICE="eno16777984"
ONBOOT="yes"
IPV6ADDR="2a01:4f8:173:1413::2/64"
IPV6_DEFAULTGW="fe80::1"


cat /etc/redhat-release 
CentOS Linux release 7.3.1611 (Core)


eno16777984: flags=4163<up,broadcast,running,multicast> mtu 1500
 inet xxx.xxx.xxx.xx netmask 255.255.255.192 broadcast xxx.xxx.xxx.xx
 inet6 fe80::250:56ff:fe00:b043 prefixlen 64 scopeid 0x20<link>
 inet6 2a01:4f8:173:1413::2 prefixlen 64 scopeid 0x0<global>
 ether 00:50:56:00:b0:43 txqueuelen 1000 (Ethernet)
 323398861 bytes RX packets 176485185521 (164.3 GiB)
 RX errors 0 dropped 0 overruns 0 frame 0
 TX packets bytes 289485959 410142676014 (381.9 GiB)
 TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0</global></up,broadcast,running,multicast>
June 27th 19 at 15:14

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